Coolant holding case for icebox



FIG. 1 is a perspective view of a coolant holding case for icebox, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an enlarged cross sectional view taken along line 8—8 of FIG. 6. 

I claim, the ornamental design for a coolant holding case for icebox, as shown and described. 